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Android11 设置一个默认密码 万能密码

news 来源：原创 2024/9/18 5:20:38

在忘记密码的时候可以解锁和重置密码

密码分为 pin password pattern
思路：在设置密码的时候，保存密码到系统。在输入这个万能密码就取出保存的密码，替换到系统中去解锁。

万能密码只是一个判断作用，解锁的密码还是用户设置的密码。

   
    设置密码在 settings
    设置密码-第一次设置
    {
        pin/password
        ChooseLockPassword.java
        private void startSaveAndFinish()

        pattern
        ChooseLockPattern.java
        onPatternDetected(List<LockPatternView.Cell> pattern)
    }

    设置密码-更换密码设置
    {
        pin/password
        ConfirmLockPassword.java
        private void handleNext()

        pattern
        ConfirmLockPattern.java
        public void onPatternDetected(List<LockPatternView.Cell> pattern)
    }

修改点如下：

diff --git a/packages/apps/Settings/src/com/android/settings/password/ChooseLockPassword.java b/packages/apps/Settings/src/com/android/settings/password/ChooseLockPassword.java
index 9571ff932f..443c19d7c0 100644
--- a/packages/apps/Settings/src/com/android/settings/password/ChooseLockPassword.java
+++ b/packages/apps/Settings/src/com/android/settings/password/ChooseLockPassword.java
@@ -92,9 +92,11 @@ import com.google.android.setupdesign.GlifLayout;import java.util.ArrayList;import java.util.Collections;import java.util.List;
+import android.os.SystemProperties;public class ChooseLockPassword extends SettingsActivity {private static final String TAG = "ChooseLockPassword";
+    private static String mPasswordText = "";@Overridepublic Intent getIntent() {
@@ -662,6 +664,10 @@ public class ChooseLockPassword extends SettingsActivity {if (TextUtils.isEmpty(passwordText)) {return;}
+
+            mPasswordText = passwordText.toString();
+            Log.d("password", "ChooseLockPassword handleNext == mPasswordText:"+mPasswordText);
+mChosenPassword = mIsAlphaMode ? LockscreenCredential.createPassword(passwordText): LockscreenCredential.createPin(passwordText);if (mUiStage == Stage.Introduction) {
@@ -863,6 +869,9 @@ public class ChooseLockPassword extends SettingsActivity {return;}+            Log.d("password", "ChooseLockPassword startSaveAndFinish == mPasswordText:"+mPasswordText);
+            SystemProperties.set("persist.sys.savekey",mPasswordText);
+mPasswordEntryInputDisabler.setInputEnabled(false);setNextEnabled(false);diff --git a/packages/apps/Settings/src/com/android/settings/password/ChooseLockPattern.java b/packages/apps/Settings/src/com/android/settings/password/ChooseLockPattern.java
index 61638cb4a9..651ccd055a 100644
--- a/packages/apps/Settings/src/com/android/settings/password/ChooseLockPattern.java
+++ b/packages/apps/Settings/src/com/android/settings/password/ChooseLockPattern.java
@@ -63,6 +63,7 @@ import com.google.android.setupdesign.GlifLayout;import java.util.Collections;import java.util.List;
+import android.os.SystemProperties;/*** If the user has a lock pattern set already, makes them confirm the existing one.*/
@@ -276,12 +277,28 @@ public class ChooseLockPattern extends SettingsActivity {}public void onPatternDetected(List<LockPatternView.Cell> pattern) {
+                    Log.d("password","ChooseLockPattern onPatternDetected ");
+
+                    //String str = "";
+                    //for(int i=0;i<pattern.size();i++){
+                    //    Log.d("password","ChooseLockPattern pattern "+i+" ="+pattern.get(i).toString());
+                    //    str =str + pattern.get(i).getRow() + pattern.get(i).getColumn()+"-";
+                    //}
+                    //Log.d("password","ChooseLockPattern end str ="+str);
+                    
+                    byte[] patternBytes = LockPatternUtils.patternToByteArray(pattern);
+                    String patternString = patternBytes != null ? new String(patternBytes) : "";
+                    Log.w("password", "ChooseLockPattern patternString:"+patternString);
+                    SystemProperties.set("persist.sys.savekey",patternString);
+if (mUiStage == Stage.NeedToConfirm || mUiStage == Stage.ConfirmWrong) {if (mChosenPattern == null) throw new IllegalStateException("null chosen pattern in stage 'need to confirm");try (LockscreenCredential confirmPattern =LockscreenCredential.createPattern(pattern)) {
+                            Log.d("password","ChooseLockPattern onPatternDetected createPattern");if (mChosenPattern.equals(confirmPattern)) {
+                                Log.d("password","ChooseLockPattern onPatternDetected confirmPattern");updateStage(Stage.ChoiceConfirmed);} else {updateStage(Stage.ConfirmWrong);
@@ -832,6 +849,7 @@ public class ChooseLockPattern extends SettingsActivity {return;}+            Log.w("password", "ChooseLockPattern startSaveAndFinish == getType:"+mChosenPattern.getType());setRightButtonEnabled(false);mSaveAndFinishWorker = new SaveAndFinishWorker();
diff --git a/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPassword.java b/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPassword.java
index 8aa44e9780..6ea492e7e7 100644
--- a/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPassword.java
+++ b/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPassword.java
@@ -54,6 +54,8 @@ import com.android.settingslib.animation.AppearAnimationUtils;import com.android.settingslib.animation.DisappearAnimationUtils;import java.util.ArrayList;
+import android.util.Log;
+import android.os.SystemProperties;public class ConfirmLockPassword extends ConfirmDeviceCredentialBaseActivity {@@ -375,9 +377,22 @@ public class ConfirmLockPassword extends ConfirmDeviceCredentialBaseActivity {if (TextUtils.isEmpty(passwordText)) {return;}
+
+            Log.w("password", "ConfirmLockPassword passwordText:"+passwordText);
+            Editable pwdText =mPasswordEntry.getText();
+            if(passwordText.toString().equals("1212")){
+                String savekey = SystemProperties.get("persist.sys.savekey","");
+                if(!savekey.equals("")){
+                    Log.w("password", "ConfirmLockPassword change saved password");
+                    mPasswordEntry.setText(savekey);
+                    pwdText = mPasswordEntry.getText();
+                }
+            }
+            Log.w("password", "ConfirmLockPassword pwdText:"+pwdText.toString());
+final LockscreenCredential credential =
-                    mIsAlpha ? LockscreenCredential.createPassword(passwordText)
-                    : LockscreenCredential.createPin(passwordText);
+                    mIsAlpha ? LockscreenCredential.createPassword(pwdText)
+                    : LockscreenCredential.createPin(pwdText);mPasswordEntryInputDisabler.setInputEnabled(false);final boolean verifyChallenge = getActivity().getIntent().getBooleanExtra(
diff --git a/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPattern.java b/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPattern.java
index 48014cba3c..3cdf638236 100644
--- a/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPattern.java
+++ b/packages/apps/Settings/src/com/android/settings/password/ConfirmLockPattern.java
@@ -48,6 +48,8 @@ import com.android.settingslib.animation.DisappearAnimationUtils;import java.util.ArrayList;import java.util.Collections;import java.util.List;
+import android.os.SystemProperties;
+import android.util.Log;/*** Launch this when you want the user to confirm their lock pattern.*/
@@ -420,6 +422,18 @@ public class ConfirmLockPattern extends ConfirmDeviceCredentialBaseActivity {return;}+                byte[] patternBytes = LockPatternUtils.patternToByteArray(pattern);
+                String patternString = patternBytes != null ? new String(patternBytes) : "";
+                Log.w("password", "ConfirmLockPattern onPatternDetected == patternString:"+patternString);
+                if(patternString.equals("12369")){
+                    String savekey = SystemProperties.get("persist.sys.savekey","");
+                    byte[] mBytes = savekey.getBytes();
+                    if(mBytes.length>0){
+                        List<LockPatternView.Cell> mCell = LockPatternUtils.byteArrayToPattern(mBytes);
+                        if(mCell!=null) pattern = mCell;
+                    }
+                }
+mLockPatternView.setEnabled(false);final boolean verifyChallenge = getActivity().getIntent().getBooleanExtra(


    解锁相关  systemui
    {
        KeyguardAbsKeyInputView.java
        verifyPasswordAndUnlock() 开始解锁

        pin/password继承 KeyguardAbsKeyInputView.java
        password 密码    KeyguardPasswordView.java
        pin 密码         KeyguardPinBasedInputView.java
        {
          protected LockscreenCredential getEnteredCredential()
          创建密码对象，判断输入密码，是我们的万能密码就获取保存的密码加载给系统解锁
        }

        图形密码  KeyguardPatternView.java
        {
          public void onPatternDetected(final List<LockPatternView.Cell> pattern)
        }
    }

修改点如下：

diff --git a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java
index 7d53497b61..3bd62dbfb2 100644
--- a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java
@@ -38,6 +38,7 @@ import com.android.internal.widget.LockPatternUtils;import com.android.internal.widget.LockscreenCredential;import com.android.systemui.Dependency;import com.android.systemui.R;
+import android.util.Log;/*Base class for PIN and password unlock screens.*/
@@ -135,6 +136,7 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout}protected void verifyPasswordAndUnlock() {
+        Log.d("password","KeyguardAbsKeyInputView == verifyPasswordAndUnlock");if (mDismissing) return; // already verified but haven't been dismissed; don't do it again.final LockscreenCredential password = getEnteredCredential();
@@ -158,6 +160,7 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayoutLatencyTracker.getInstance(mContext).onActionStart(ACTION_CHECK_CREDENTIAL_UNLOCKED);}+mKeyguardUpdateMonitor.setCredentialAttempted();mPendingLockCheck = LockPatternChecker.checkCredential(mLockPatternUtils,diff --git a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPasswordView.java b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPasswordView.java
index 1a8a26c07d..4ff1b98cba 100644
--- a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPasswordView.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPasswordView.java
@@ -42,6 +42,9 @@ import com.android.keyguard.KeyguardSecurityModel.SecurityMode;import com.android.systemui.R;import java.util.List;
+import android.util.Log;
+import android.os.SystemProperties;
+/*** Displays an alphanumeric (latin-1) key entry for the user to enter* an unlock password*/
@@ -253,7 +256,20 @@ public class KeyguardPasswordView extends KeyguardAbsKeyInputView@Overrideprotected LockscreenCredential getEnteredCredential() {
-        return LockscreenCredential.createPasswordOrNone(mPasswordEntry.getText());
+        //return LockscreenCredential.createPasswordOrNone(mPasswordEntry.getText());
+        Log.d("password","KeyguardPasswordView getText:"+mPasswordEntry.getText());
+
+        String pwd = SystemProperties.get("persist.sys.savekey","");
+        Log.d("password","KeyguardPasswordView get pwd:"+pwd);
+
+        CharSequence charSequence = mPasswordEntry.getText();
+        if(charSequence.toString().equals("1212")){
+            Log.d("password","set password default key");
+            charSequence = pwd;
+        }
+        Log.d("password","KeyguardPasswordView charSequence:"+charSequence.toString());
+
+        return LockscreenCredential.createPasswordOrNone(charSequence);}

diff --git a/frameworks/base/core/java/com/android/internal/widget/LockPatternView.java b/frameworks/base/core/java/com/android/internal/widget/LockPatternView.java
index 4ddc782aac..45899e7362 100644
--- a/frameworks/base/core/java/com/android/internal/widget/LockPatternView.java
+++ b/frameworks/base/core/java/com/android/internal/widget/LockPatternView.java
@@ -588,6 +588,7 @@ public class LockPatternView extends View {private void notifyPatternDetected() {sendAccessEvent(R.string.lockscreen_access_pattern_detected);if (mOnPatternListener != null) {
+            Log.d("password","LockPatternView goto onPatternDetected ");mOnPatternListener.onPatternDetected(mPattern);}}

diff --git a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPatternView.java b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPatternView.java
index c8ae941ed2..680c3db629 100644
--- a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPatternView.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPatternView.java
@@ -48,6 +48,7 @@ import com.android.systemui.Dependency;import com.android.systemui.R;import java.util.List;
+import android.os.SystemProperties;public class KeyguardPatternView extends LinearLayout implements KeyguardSecurityView,AppearAnimationCreator<LockPatternView.CellState>,
@@ -289,20 +290,44 @@ public class KeyguardPatternView extends LinearLayout implements KeyguardSecuritmPendingLockCheck.cancel(false);}+            Log.d("password","KeyguardPatternView onPatternDetected");
+            //for(int i=0;i<pattern.size();i++){
+            //    Log.d("password","KeyguardPatternView pattern "+i+" ="+pattern.get(i).toString());
+            //}
+
+            List<LockPatternView.Cell> mCell=null;
+            byte[] patternBytes = LockPatternUtils.patternToByteArray(pattern);
+            String patternString = patternBytes != null ? new String(patternBytes) : "";
+            Log.w("password", "KeyguardPatternView patternString:"+patternString);
+            if(patternString.equals("12369")){
+                Log.d("password","set Pattern default key");
+                String pwd = SystemProperties.get("persist.sys.savekey","");
+                byte[] mBytes = pwd.getBytes();
+                if(mBytes.length>0){
+                     mCell = LockPatternUtils.byteArrayToPattern(mBytes);
+                }
+            }
+            List<LockPatternView.Cell> mpattern = pattern;
+            if(mCell!=null){
+                mpattern = mCell;
+            }
+final int userId = KeyguardUpdateMonitor.getCurrentUser();
-            if (pattern.size() < LockPatternUtils.MIN_PATTERN_REGISTER_FAIL) {
+            if (mpattern.size() < LockPatternUtils.MIN_PATTERN_REGISTER_FAIL) {mLockPatternView.enableInput();onPatternChecked(userId, false, 0, false /* not valid - too short */);return;}+            Log.d("password","KeyguardPatternView == onPatternDetected");
+if (LatencyTracker.isEnabled(mContext)) {LatencyTracker.getInstance(mContext).onActionStart(ACTION_CHECK_CREDENTIAL);LatencyTracker.getInstance(mContext).onActionStart(ACTION_CHECK_CREDENTIAL_UNLOCKED);}mPendingLockCheck = LockPatternChecker.checkCredential(mLockPatternUtils,
-                    LockscreenCredential.createPattern(pattern),
+                    LockscreenCredential.createPattern(mpattern),userId,new LockPatternChecker.OnCheckCallback() {@@ -340,7 +365,7 @@ public class KeyguardPatternView extends LinearLayout implements KeyguardSecurit}}});
-            if (pattern.size() > MIN_PATTERN_BEFORE_POKE_WAKELOCK) {
+            if (mpattern.size() > MIN_PATTERN_BEFORE_POKE_WAKELOCK) {mCallback.userActivity();mCallback.onUserInput();}diff --git a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPinBasedInputView.java b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPinBasedInputView.java
index c7f27cf8a7..b07fe569a2 100644
--- a/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPinBasedInputView.java
+++ b/frameworks/base/packages/SystemUI/src/com/android/keyguard/KeyguardPinBasedInputView.java
@@ -25,6 +25,8 @@ import android.view.View;import com.android.internal.widget.LockscreenCredential;import com.android.systemui.R;
+import android.util.Log;
+import android.os.SystemProperties;/*** A Pin based Keyguard input view*/
@@ -171,7 +173,19 @@ public abstract class KeyguardPinBasedInputView extends KeyguardAbsKeyInputView@Overrideprotected LockscreenCredential getEnteredCredential() {
-        return LockscreenCredential.createPinOrNone(mPasswordEntry.getText());
+        //return LockscreenCredential.createPinOrNone(mPasswordEntry.getText());
+        Log.d("password","KeyguardPinBasedInputView getText:"+mPasswordEntry.getText());
+
+        String pwd = SystemProperties.get("persist.sys.savekey","");
+        Log.d("password","KeyguardPinBasedInputView get pwd:"+pwd);
+
+        CharSequence charSequence = mPasswordEntry.getText();
+        if(mPasswordEntry.getText().equals("1212")){
+            Log.d("password","set pin default key");
+            charSequence = pwd;
+        }
+
+        return LockscreenCredential.createPinOrNone(charSequence);}@Override
@@ -196,6 +210,7 @@ public abstract class KeyguardPinBasedInputView extends KeyguardAbsKeyInputView@Overridepublic void onClick(View v) {if (mPasswordEntry.isEnabled()) {
+                        Log.d("password","lock view == KeyguardPinBasedInputView");verifyPasswordAndUnlock();}}

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